<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>招生简章</el-breadcrumb-item>
      <el-breadcrumb-item>教学班列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList" @keyup.enter="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->

      <el-table :data="userlist" border stripe>
        <el-table-column label="班级编号" prop="id"></el-input></el-table-column>
        <el-table-column label="班级名称" prop="classname"></el-input></el-table-column>
        <el-table-column label="班级简介" prop="introduction"></el-input></el-table-column>
        <el-table-column label="招生年级" prop="grade"></el-input></el-table-column>
        <el-table-column label="开始时间" prop="startweek"></el-input></el-table-column>
        <el-table-column label="结束时间" prop="endweek"></el-input></el-table-column>
        <el-table-column label="任课老师" prop="teacher"></el-input></el-table-column>
        <el-table-column label="开班地点" prop="adress"></el-input></el-table-column>
        <el-table-column label="基本费(元)" prop="basiccost"></el-input></el-table-column>
        <el-table-column label="材料费(元)" prop="materialcost"></el-input></el-table-column>
        <el-table-column label="开班人数" prop="number"></el-in put></el-table-column>
        <el-table-column label="报名人数" prop="applynumber"></el-input></el-table-column>
 <!--       <el-table-column label="发布">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>-->
        <el-table-column label="操作" width="250px">
          <template slot-scope="scope">
            <!-- 开班按钮 -->
            <el-button type="primary" icon="el-icon-setting" size="mini" @click="issue(scope.row.id)"></el-button>
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum"
                     :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper"
                     :total="total">
      </el-pagination>
    </el-card>


    <!-- 修改用户的对话框 -->
    <el-dialog title="修改招生简章" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="班级编号" prop="id"><el-input v-model="editForm.id"></el-input></el-form-item>
        <el-form-item label="班级名称" prop="classname"><el-input v-model="editForm.classname"></el-input></el-form-item>
        <el-form-item label="班级简介" prop="introduction"><el-input v-model="editForm.introduction"></el-input></el-form-item>
        <el-form-item label="招生年级" prop="grade "><el-input v-model="editForm.grade " ></el-input></el-form-item>
        <el-form-item label="开始时间" prop="startweek"><el-input v-model="editForm.startweek"  ></el-input></el-form-item>
        <el-form-item label="结束时间" prop="endweek"><el-input v-model="editForm.endweek"  ></el-input></el-form-item>
        <el-form-item label="基本费(元)" prop="basiccost"><el-input v-model="editForm.basiccost"  ></el-input></el-form-item>
        <el-form-item label="材料费(元)" prop="materialcost"><el-input v-model="editForm.materialcost"  ></el-input></el-form-item>
        <el-form-item label="开班人数" prop="number"><el-input v-model="editForm.number" ></el-input></el-form-item>
        <el-form-item label="相关图片" prop="picture"><el-button size="small" type="primary" v-model="editForm.picture">点击上传</el-button></el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
    export default {
        data() {
            // 验证邮箱的规则
            var checkEmail = (rule, value, cb) => {
                // 验证邮箱的正则表达式
                const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

                if (regEmail.test(value)) {
                    // 合法的邮箱
                    return cb()
                }

                cb(new Error('请输入合法的邮箱'))
            }

            // 验证手机号的规则
            var checkMobile = (rule, value, cb) => {
                // 验证手机号的正则表达式
                const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/

                if (regMobile.test(value)) {
                    return cb()
                }

                cb(new Error('请输入合法的手机号'))
            }

            return {
                // 获取用户列表的参数对象
                queryInfo: {
                    query: '',
                    // 当前的页数
                    pagenum: 1,
                    // 当前每页显示多少条数据
                    pagesize: 2
                },
                userlist: [],

                total: 0,
                // 控制添加用户对话框的显示与隐藏

                options: [{
                    value: '1',
                    label: '班主任'
                }, {
                    value: '2',
                    label: '任课老师'
                }],
                // 控制修改用户对话框的显示与隐藏
                editDialogVisible: false,
                // 查询到的用户信息对象
                editForm: {
                    id: '10086',
                    classname: '摸鱼',
                    introduction: '一个正经的班级',
                    grade:'大班',
                    startweek: '2020 第1周',
                    endweek: '2020 第5周',
                    basiccost:'666',
                    materialcost:'520',
                    mg_state: true,
                    number:'10',
                    applynumber: '13',
                },
                // 修改表单的验证规则对象
                editFormRules: {
                    email: [{
                        required: true,
                        message: '请输入用户邮箱',
                        trigger: 'blur'
                    },
                        {
                            validator: checkEmail,
                            trigger: 'blur'
                        }
                    ],
                    mobile: [{
                        required: true,
                        message: '请输入用户手机',
                        trigger: 'blur'
                    },
                        {
                            validator: checkMobile,
                            trigger: 'blur'
                        }
                    ]
                },
                // 控制分配角色对话框的显示与隐藏
                setRoleDialogVisible: false,
                // 需要被分配角色的用户信息
                userInfo: {},
                // 所有角色的数据列表
                rolesList: [],
                // 已选中的角色Id值
                selectedRoleId: ''
            }
        },
        created() {
            this.getUserList()
        },
        methods: {
            async getUserList() {
                // const { data: res } = await this.$http.get('users', {
                //   params: this.queryInfo
                // })
                // if (res.meta.status !== 200) {
                //   return this.$message.error('获取用户列表失败！')
                // }
                // this.userlist = res.data.users
                // this.total = res.data.total
                this.userlist = [{
                    id: '10086',
                    classname: '摸鱼',
                    introduction: '一个正经的班级',
                    grade:'大班',
                    startweek: '2020 第1周',
                    endweek: '2020 第5周',
                    basiccost:'666',
                    materialcost:'520',
                    mg_state: true,
                    number:'10',
                    applynumber: '13',
                }]
            },
            // 监听 pagesize 改变的事件
            handleSizeChange(newSize) {
                this.queryInfo.pagesize = newSize
                this.getUserList()
            },
            // 监听 页码值 改变的事件
            handleCurrentChange(newPage) {
                this.queryInfo.pagenum = newPage
                this.getUserList()
            },
            // 监听 switch 开关状态的改变
            async userStateChanged(userinfo) {
                // const { data: res } = await this.$http.put(
                //   `users/${userinfo.id}/state/${userinfo.mg_state}`
                // )
                // if (res.meta.status !== 200) {
                //   userinfo.mg_state = !userinfo.mg_state
                //   return this.$message.error('更新用户状态失败！')
                // }
                this.$message.success('更新发布状态成功！')
            },
            // 监听添加用户对话框的关闭事件
            addDialogClosed() {
                this.$refs.addFormRef.resetFields()
            },
            // 点击按钮，添加新用户
            addUser() {
                this.$refs.addFormRef.validate(async valid => {
                    if (!valid) return
                    // 可以发起添加用户的网络请求
                    //         const { data: res } = await this.$http.post('users', this.addForm)
                    //
                    //         if (res.meta.status !== 201) {
                    //           this.$message.error('添加用户失败！')
                    //         }

                    this.$message.success('添加用户成功！')
                    // 隐藏添加用户的对话框
                    this.addDialogVisible = false
                    // 重新获取用户列表数据
                    this.getUserList()
                })
            },
            // 展示编辑用户的对话框
            async showEditDialog(id) {
                // const { data: res } = await this.$http.get('users/' + id)

                // if (res.meta.status !== 200) {
                //   return this.$message.error('查询用户信息失败！')
                // }

                // this.editForm = res.data
                this.editDialogVisible = true
            },
            // 监听修改用户对话框的关闭事件
            editDialogClosed() {
                this.$refs.editFormRef.resetFields()
            },
            // 修改用户信息并提交
            editUserInfo() {
                this.$refs.editFormRef.validate(async valid => {
                    if (!valid) return
                    // 发起修改用户信息的数据请求
                    const {
                        data: res
                    } = await this.$http.put(
                        'users/' + this.editForm.id, {
                            email: this.editForm.email,
                            mobile: this.editForm.mobile
                        }
                    )

                    if (res.meta.status !== 200) {
                        return this.$message.error('更新用户信息失败！')
                    }

                    // 关闭对话框
                    this.editDialogVisible = false
                    // 刷新数据列表
                    this.getUserList()
                    // 提示修改成功
                    this.$message.success('更新用户信息成功！')
                })
            },
            // 根据Id删除对应的用户信息
            async removeUserById(id) {
                // 弹框询问用户是否删除数据
                const confirmResult = await this.$confirm(
                    '此操作将永久删除该用户, 是否继续?',
                    '提示', {
                        confirmButtonText: '确定',
                        cancelButtonText: '取消',
                        type: 'warning'
                    }
                ).catch(err => err)

                // 如果用户确认删除，则返回值为字符串 confirm
                // 如果用户取消了删除，则返回值为字符串 cancel
                // console.log(confirmResult)
                if (confirmResult !== 'confirm') {
                    return this.$message.info('已取消删除')
                }

                const {
                    data: res
                } = await this.$http.delete('users/' + id)

                if (res.meta.status !== 200) {
                    return this.$message.error('删除用户失败！')
                }

                this.$message.success('删除用户成功！')
                this.getUserList()
            },
            // 根据Id确认开班
            async issue(id) {
                // 弹框询问用户是否删除数据
                const confirmResult = await this.$confirm(
                    '此操作将开班, 是否继续?',
                    '提示', {
                        confirmButtonText: '确定',
                        cancelButtonText: '取消',
                        type: 'warning'
                    }
                ).catch(err => err)

                // 如果用户确认开班，则返回值为字符串 confirm
                // 如果用户取消了开班，则返回值为字符串 cancel
                // console.log(confirmResult)
                if (confirmResult !== 'confirm') {
                    return this.$message.info('已取消开班')
                }

                const {
                    data: res
                } = await this.$http.delete('users/' + id)

                if (res.meta.status !== 200) {
                    return this.$message.error('开班失败！')
                }

                this.$message.success('开班成功！')
                this.getUserList()
            },
            // 展示分配角色的对话框
            async setRole(userInfo) {
                this.userInfo = userInfo

                // 在展示对话框之前，获取所有角色的列表
                const {
                    data: res
                } = await this.$http.get('roles')
                if (res.meta.status !== 200) {
                    return this.$message.error('获取角色列表失败！')
                }

                this.rolesList = res.data

                this.setRoleDialogVisible = true
            },
            // 点击按钮，分配角色
            async saveRoleInfo() {
                if (!this.selectedRoleId) {
                    return this.$message.error('请选择要分配的角色！')
                }

                const {
                    data: res
                } = await this.$http.put(
                    `users/${this.userInfo.id}/role`, {
                        rid: this.selectedRoleId
                    }
                )

                if (res.meta.status !== 200) {
                    return this.$message.error('更新角色失败！')
                }

                this.$message.success('更新角色成功！')
                this.getUserList()
                this.setRoleDialogVisible = false
            },
            // 监听分配角色对话框的关闭事件
            setRoleDialogClosed() {
                this.selectedRoleId = ''
                this.userInfo = {}
            },
            handleRemove(file, fileList) {
                console.log(file, fileList)
            },
            handlePreview(file) {
                console.log(this.fileList)
                console.log(file.response)
            },
            handleExceed(files, fileList) {
                this.$message.warning(`当前限制选择 1 个文件，本次选择了 ${files.length} 个文件，共选择了 ${files.length + fileList.length} 个文件`)
            },
            beforeRemove(file, fileList) {
                console.log(fileList.slice(-3))
                return this.$confirm(`确定移除 ${file.name}？`)
            }
        }
    }
</script>

<style lang="less" scoped>
</style>
